EP 0336263 A3 19910703 - ALCOHOL ETHOXYLATES WITH REDUCED RESIDUAL EO OR PO CONTENT
Title (en)
ALCOHOL ETHOXYLATES WITH REDUCED RESIDUAL EO OR PO CONTENT
Publication
Application
Priority
DE 3811319 A 19880402
Abstract (en)
[origin: EP0336263A2] The alkoxylation of preferably longer-chain alcohols and comparable partial reaction products of polyhydric alcohols in the presence of basic alkali metal compounds as catalysts is described, the reaction being carried out with increased minimum concentrations of the basic catalyst to reduce the residual content of free ethylene oxide to values below 1 ppm or of free propylene oxide to values below 5 ppm in the reaction product initially obtained. The process according to the invention at the same time enables the improvement of the cold characteristics of selected reaction products having surfactant or emulsifying action.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); B01J 31/02 (2006.01); C07C 41/00 (2006.01); C07C 41/03 (2006.01); C07C 41/34 (2006.01); C07C 43/11 (2006.01); C07C 67/00 (2006.01); C08G 65/28 (2006.01)
CPC (source: EP KR US)
C07C 41/03 (2013.01 - EP US); C07C 41/34 (2013.01 - EP US); C07C 43/13 (2013.01 - KR)
C-Set (source: EP US)
Citation (search report)
- [A] FR 2508917 A1 19830107 - UNIV MANCHESTER [GB]
- [A] US 4443634 A 19840417 - ZIEGENHAIN WILLIAM C [US], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0336263 A2 19891011; EP 0336263 A3 19910703; EP 0336263 B1 19950308; AT E119513 T1 19950315; AU 3233689 A 19891005; AU 608143 B2 19910321; BR 8901521 A 19891114; DE 3811319 A1 19891019; DE 58909075 D1 19950413; ES 2068846 T3 19950501; JP H01290643 A 19891122; KR 890015986 A 19891127; NO 169888 B 19920511; NO 169888 C 19920819; NO 891368 D0 19890331; NO 891368 L 19891003; TR 24368 A 19910920; US 4967017 A 19901030
DOCDB simple family (application)
EP 89105460 A 19890328; AT 89105460 T 19890328; AU 3233689 A 19890331; BR 8901521 A 19890331; DE 3811319 A 19880402; DE 58909075 T 19890328; ES 89105460 T 19890328; JP 8463289 A 19890403; KR 890004261 A 19890331; NO 891368 A 19890331; TR 31289 A 19890331; US 33267389 A 19890331